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MLE71912HVUJ74S - SNR

MLE71912HVUJ74S

High precision angular contact ball bearing, sealed series ML, laminated resin cage centred on outer ring

In the ball bearing and high precision bearing ranges, the high precision angular contact ball bearing solves the maximum reliability constraints with increased performance in terms of rigidity, speed, capacity and precision. This bearing is recommended for demanding applications in terms of precision such as machine tool spindles. NTN-SNR is getting under ranges dedicated to requirements of speed, sealing, specific greasing, etc.

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Specs

PRODUCT DIMENSIONS

Internal diameter (d) 60 mm
External diameter (D) 85 mm
Bearing/Inner ring width (B) 13 mm
External diameter inner ring d1 68,1 mm
External diameter inner ring (d2) 66,15 mm
Inner diameter outer ring (D1) 78,71 mm
Inner diameter outer ring D2 80,31 mm
Charge load application point a 23 mm
Contact angle α 25 °
Min fillet radius (rs) 1 mm
Min fillet radius r1s 0,3 mm
Coefficient f0 8.684
Precision class P4S
Mass 0,19 kg
Brand SNR
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PRODUCT PERFORMANCE

Dynamic load (C) 9,8 kN
Static load (C0) 7,8 kN
Fatigue limit load (Cu) 0,44 kN
Axial displacement K Factor 0.56
Preload level 7
Preload value 0,08 kN
Axial rigidity 108 N/µm
Radial rigidity 242 N/µm
Min operating temperature (Tmin) -20 °C
Max operating temperature (Tmax) 120 °C
Nlim (grease) 18500 tr/min
Characteristic cage frequency, FTF 0,465 Hz
Characteristic rolling element frequency, BSF 12,841 Hz
Characteristic outer ring frequency, BPF0 14,876 Hz
Characteristic inner ring frequency, BPFI 17,124 Hz

ABUTMENT

Min shoulder diameter IR (da min) 65,5 mm
Min IR shoulder diameter (db min) 65,5 mm
Max shoulder diameter OR (Da max) 79,5 mm
Max OR shoulder diameter (Db max) 79,5 mm
Maxi fillet radius r1a 0,3 mm
Max shaft & housing fillet radius (ra max) 1 mm
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Calcul factors image